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Question

Find the average of all the prime number between 30 and 50?

Options:
A .  38
B .  38.8
C .  39
D .  39.8
E .  None of these
Answer: Option D
 -  There are 5 prime numbers- 31, 37, 41, 43, 47
 
Average = 31+37+41+43+47 = 199 = 39.8 5 5

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